A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6105-01-116-7237
NSN 5895-01-563-4832
NSN 6110-00-477-9677
NSN 5975-00-686-3504
NSN 7035-01-400-3666
NSN 5895-01-078-6395
NSN 5945-01-422-1684
NSN 6110-01-088-7198
NSN 2925-01-187-5480
NSN 5985-01-328-6772
NSN 6685-01-141-1302
NSN 5835-01-118-4690